title: [Human genetics and infectious diseases (author's transl)].
abstract: Infectious diseases, especially the worldwide epidemic diseases such as plague, smallpox, syphilis, tuberculosis have to a great extent selective effects. This is demonstrated inter alia in the different "selection values" in the ABO blood group system. Under present day civilized living conditions O carriers have a preservation advantage over blood group A. The deletion of the selection factor "infectious disease", which entails a decline of immunity, may nevertheless regain importance if environmental changes occur.
mesh_terms: D000017:ABO Blood-Group System; D000328:Adult; D000368:Aged; D003141:Communicable Diseases / Q000235:genetics*; D004200:Diseases in Twins; D004777:Environment; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014774:Virulence
chemical_list: D000017:ABO Blood-Group System
vernacular_title: Humangenetik und Infektionskrankheiten.